./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/scull.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/scull.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:56:54,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:56:54,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:56:54,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:56:54,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:56:54,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:56:54,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:56:54,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:56:54,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:56:54,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:56:54,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:56:54,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:56:54,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:56:54,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:56:54,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:56:54,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:56:54,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:56:54,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:56:54,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:56:54,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:56:54,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:56:54,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:56:54,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:56:54,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:56:54,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:56:54,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:56:54,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:56:54,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:56:54,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:56:54,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:56:54,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:56:54,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:56:54,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:56:54,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:56:54,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:56:54,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:56:54,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:56:54,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:56:54,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:56:54,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:56:54,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:56:54,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-03 01:56:54,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:56:54,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:56:54,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:56:54,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:56:54,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:56:54,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:56:54,750 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:56:54,750 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:56:54,751 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:56:54,751 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:56:54,751 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:56:54,752 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:56:54,752 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:56:54,752 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:56:54,753 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:56:54,753 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:56:54,753 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:56:54,754 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:56:54,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:56:54,755 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:56:54,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:56:54,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:56:54,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:56:54,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:56:54,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:56:54,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:56:54,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:56:54,758 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-03 01:56:54,758 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:56:54,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:56:54,758 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:56:54,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:56:54,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:56:54,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:56:54,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:56:54,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:56:54,760 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:56:54,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:56:54,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:56:54,761 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:56:54,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:56:54,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:56:54,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:56:54,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b [2022-11-03 01:56:55,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:56:55,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:56:55,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:56:55,169 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:56:55,170 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:56:55,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/pthread-atomic/scull.i [2022-11-03 01:56:55,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/data/ffb804f77/dc28c9b11c514410ade21ff59e247a89/FLAG05b302ec9 [2022-11-03 01:56:55,942 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:56:55,943 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/sv-benchmarks/c/pthread-atomic/scull.i [2022-11-03 01:56:55,960 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/data/ffb804f77/dc28c9b11c514410ade21ff59e247a89/FLAG05b302ec9 [2022-11-03 01:56:56,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/data/ffb804f77/dc28c9b11c514410ade21ff59e247a89 [2022-11-03 01:56:56,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:56:56,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:56:56,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:56:56,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:56:56,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:56:56,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:56:56" (1/1) ... [2022-11-03 01:56:56,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a611380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:56, skipping insertion in model container [2022-11-03 01:56:56,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:56:56" (1/1) ... [2022-11-03 01:56:56,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:56:56,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:56:56,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/sv-benchmarks/c/pthread-atomic/scull.i[30879,30892] [2022-11-03 01:56:56,923 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/sv-benchmarks/c/pthread-atomic/scull.i[31740,31753] [2022-11-03 01:56:56,946 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/sv-benchmarks/c/pthread-atomic/scull.i[32508,32521] [2022-11-03 01:56:57,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:56:57,034 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:56:57,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/sv-benchmarks/c/pthread-atomic/scull.i[30879,30892] [2022-11-03 01:56:57,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/sv-benchmarks/c/pthread-atomic/scull.i[31740,31753] [2022-11-03 01:56:57,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/sv-benchmarks/c/pthread-atomic/scull.i[32508,32521] [2022-11-03 01:56:57,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:56:57,200 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:56:57,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57 WrapperNode [2022-11-03 01:56:57,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:56:57,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:56:57,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:56:57,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:56:57,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,362 INFO L138 Inliner]: procedures = 185, calls = 58, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 524 [2022-11-03 01:56:57,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:56:57,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:56:57,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:56:57,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:56:57,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,454 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:56:57,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:56:57,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:56:57,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:56:57,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (1/1) ... [2022-11-03 01:56:57,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:56:57,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:56:57,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:56:57,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3eccac7-ac38-4838-9e87-cbb98c2001db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:56:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:56:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 01:56:57,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 01:56:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 01:56:57,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 01:56:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:56:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 01:56:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:56:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure loader [2022-11-03 01:56:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure loader [2022-11-03 01:56:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:56:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:56:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:56:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:56:57,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:56:57,598 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 01:56:57,909 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:56:57,912 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:56:58,065 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L890: assume { :end_inline_scull_trim } true; [2022-11-03 01:56:58,066 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-1: assume -2147483648 <= scull_cleanup_module_#t~ret42#1 && scull_cleanup_module_#t~ret42#1 <= 2147483647; [2022-11-03 01:56:58,066 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-2: havoc scull_cleanup_module_#t~ret42#1; [2022-11-03 01:56:58,066 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L887: assume { :end_inline_scull_cleanup_module } true; [2022-11-03 01:56:58,066 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint scull_trim_returnLabel#1: scull_cleanup_module_#t~ret42#1 := scull_trim_#res#1; [2022-11-03 01:56:58,067 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L898: scull_init_module_#res#1 := scull_init_module_~result~0#1; [2022-11-03 01:56:58,961 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:56:58,993 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:56:59,000 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:56:59,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:56:59 BoogieIcfgContainer [2022-11-03 01:56:59,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:56:59,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:56:59,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:56:59,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:56:59,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:56:56" (1/3) ... [2022-11-03 01:56:59,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624ae38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:56:59, skipping insertion in model container [2022-11-03 01:56:59,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:56:57" (2/3) ... [2022-11-03 01:56:59,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624ae38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:56:59, skipping insertion in model container [2022-11-03 01:56:59,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:56:59" (3/3) ... [2022-11-03 01:56:59,024 INFO L112 eAbstractionObserver]: Analyzing ICFG scull.i [2022-11-03 01:56:59,035 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 01:56:59,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:56:59,049 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2022-11-03 01:56:59,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 01:56:59,292 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 01:56:59,348 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:56:59,366 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 588 places, 594 transitions, 1212 flow [2022-11-03 01:56:59,370 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 588 places, 594 transitions, 1212 flow [2022-11-03 01:56:59,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 588 places, 594 transitions, 1212 flow [2022-11-03 01:56:59,789 INFO L130 PetriNetUnfolder]: 16/591 cut-off events. [2022-11-03 01:56:59,790 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-03 01:56:59,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 591 events. 16/591 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1809 event pairs, 0 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 534. Up to 4 conditions per place. [2022-11-03 01:56:59,951 INFO L118 LiptonReduction]: Number of co-enabled transitions 178250 [2022-11-03 01:57:24,974 INFO L133 LiptonReduction]: Checked pairs total: 1032592 [2022-11-03 01:57:24,974 INFO L135 LiptonReduction]: Total number of compositions: 617 [2022-11-03 01:57:24,987 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 182 places, 183 transitions, 390 flow [2022-11-03 01:57:37,180 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 321609 states, 315778 states have (on average 3.793490996839552) internal successors, (1197901), 321608 states have internal predecessors, (1197901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:37,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:57:37,241 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47f598e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:57:37,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2022-11-03 01:57:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 321609 states, 315778 states have (on average 3.793490996839552) internal successors, (1197901), 321608 states have internal predecessors, (1197901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 01:57:37,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:37,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 01:57:37,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting loaderErr2ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-11-03 01:57:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2302430, now seen corresponding path program 1 times [2022-11-03 01:57:37,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:37,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948577642] [2022-11-03 01:57:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:37,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:38,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:38,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948577642] [2022-11-03 01:57:38,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948577642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:38,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:38,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:57:38,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835253206] [2022-11-03 01:57:38,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:38,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:57:38,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:38,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:57:38,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:57:38,640 INFO L87 Difference]: Start difference. First operand has 321609 states, 315778 states have (on average 3.793490996839552) internal successors, (1197901), 321608 states have internal predecessors, (1197901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:43,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:43,494 INFO L93 Difference]: Finished difference Result 180216 states and 630950 transitions. [2022-11-03 01:57:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:57:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-03 01:57:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:46,286 INFO L225 Difference]: With dead ends: 180216 [2022-11-03 01:57:46,286 INFO L226 Difference]: Without dead ends: 180198 [2022-11-03 01:57:46,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:57:46,292 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:46,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 01:57:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180198 states. [2022-11-03 01:57:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180198 to 180198. [2022-11-03 01:57:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180198 states, 178759 states have (on average 3.529109023881315) internal successors, (630860), 180197 states have internal predecessors, (630860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180198 states to 180198 states and 630860 transitions. [2022-11-03 01:57:57,226 INFO L78 Accepts]: Start accepts. Automaton has 180198 states and 630860 transitions. Word has length 3 [2022-11-03 01:57:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:57,227 INFO L495 AbstractCegarLoop]: Abstraction has 180198 states and 630860 transitions. [2022-11-03 01:57:57,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:57:57,228 INFO L276 IsEmpty]: Start isEmpty. Operand 180198 states and 630860 transitions. [2022-11-03 01:57:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 01:57:57,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:57,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 01:57:57,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:57:57,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting loaderErr0ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-11-03 01:57:57,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash 71375911, now seen corresponding path program 1 times [2022-11-03 01:57:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:57,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020391935] [2022-11-03 01:57:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:57,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:57,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:57,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020391935] [2022-11-03 01:57:57,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020391935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:57,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:57,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:57:57,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873304276] [2022-11-03 01:57:57,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:57,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:57:57,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:57,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:57:57,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:57:57,410 INFO L87 Difference]: Start difference. First operand 180198 states and 630860 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:02,249 INFO L93 Difference]: Finished difference Result 280220 states and 963658 transitions. [2022-11-03 01:58:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:02,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 01:58:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:04,426 INFO L225 Difference]: With dead ends: 280220 [2022-11-03 01:58:04,427 INFO L226 Difference]: Without dead ends: 280220 [2022-11-03 01:58:04,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:04,428 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 147 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:04,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 147 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:58:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280220 states. [2022-11-03 01:58:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280220 to 186420. [2022-11-03 01:58:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186420 states, 185038 states have (on average 3.4862406640798107) internal successors, (645087), 186419 states have internal predecessors, (645087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186420 states to 186420 states and 645087 transitions. [2022-11-03 01:58:16,762 INFO L78 Accepts]: Start accepts. Automaton has 186420 states and 645087 transitions. Word has length 4 [2022-11-03 01:58:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:16,763 INFO L495 AbstractCegarLoop]: Abstraction has 186420 states and 645087 transitions. [2022-11-03 01:58:16,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:58:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 186420 states and 645087 transitions. [2022-11-03 01:58:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:58:16,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:16,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:16,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:58:16,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err10ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-11-03 01:58:16,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1168765871, now seen corresponding path program 1 times [2022-11-03 01:58:16,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:16,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572519691] [2022-11-03 01:58:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:16,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:16,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572519691] [2022-11-03 01:58:16,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572519691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:16,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:16,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:16,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620579761] [2022-11-03 01:58:16,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:16,905 INFO L87 Difference]: Start difference. First operand 186420 states and 645087 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)